diff --git a/doc/changes.texi b/doc/changes.texi
index a24ff5b..6569ec9 100644
--- a/doc/changes.texi
+++ b/doc/changes.texi
@@ -105,6 +105,14 @@ now is an obsolete alias.
 The style @file{latexinfo.el} is removed from @AUCTeX{}.
 @file{latexinfo.el} was meant to support latexinfo which in return was a
 @LaTeX{}-2.09 extension of Texinfo, but didn't manage to replace Texinfo.
+
+@item
+The function @code{TeX-region-file} was modified to no longer ensure the
+existence of an output directory when @code{TeX-output-dir} is
+non-nil. This fixed a bug in the previous implementation which created, in
+some cases, spurious output directories in sub-directories of a multi-file
+document.
+
 @end itemize
 
 @heading News in 12.3